Evaluate −6 − (−2). pls help me i need to cath up to my fellow classmates

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

What is the equation of a line passing through (-6,5) and having a slope of 1/3